Updated: Apr 15, 2026
Location and Projects
Address
3350 Betty Ln, Lafayette, CA, 94549
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Ja Design & Construction Inc Photos
Ja Design & Construction Inc
JA DESIGN AND CONSTRUCTION INC was founded in 1995 and has grown from a services company to a design and construction firm specializing in contemporary Japanese and American Craftsman design. In 1998 we installed our first Japanese garden. We have since designed and installed several more Japanese influenced landscapes and waterscapes. Remodeling kitchens and baths to meet the needs of a contemporary lifestyle is still the largest part of our business.
In 2003 we opened a wood working shop and furniture studio to produce custom pieces for our clients. Our projects are designed to meet the needs of the client while considering the impact on the environment. “Green” building techniques and materials are used whenever possible.
If you are planning to build, remodel, or add to your home, JA Design and Construction Inc is your source for lasting quality, function, and beauty. let our tem help you plan and discover your dream space.
From BuildZoom: Ja Design & Construction Inc, 3350 Betty Ln, Lafayette, CA (Employees: Mark Christopher Weyland and Reiko Weyland) holds a General Building license according to the California license board.
Their BuildZoom score of 112 ranks in the top 3% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Ja Design & Construction Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Ja Design & Construction Inc Services
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Ja Design & Construction Inc Contact Information
Phone Number: (510) 418-4218
Address: 3350 Betty Ln, Lafayette, CA 94549
Ja Design & Construction Inc Lafayette
Quality
112
97th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Ja Design & Construction Inc has a BuildZoom score of 112, which places them above 97% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
2 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Ja Design & Construction Inc has worked on at least
6.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
2 projects
|
< $5k |
|
1 project
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
The typical size of their permits is approximately $35,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Ja Design & Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
New detached 1200 s.f. adu with 2 new decks. side deck is 427 s.f. and rear deck is 470 s.f **per title 24 report 2.10 kwdc photovoltaic system requried. separate permit and plans required. **hold final for photovoltaic permit and installation** **10/31/2023 strucutral revision**lguerrero new address of 3725 a deer trail ct has been assigned to a new adu being built on this property. ... see more
Valuation:
N/A
Permit #:
BIR23-008417
Status:
final
Fee:
$6,141
Permit Type:
N/A
Building Type:
N/A
Revisioin to pa# 201810183605. kitchen and bathroom remodel. remove the pharse replace 4 windows and 1 slider in the scope of work. replace (e) stove with cook top and oven change wall hung toilet to floor toilet using (e) drain. #105
Valuation:
$1
Permit #:
202201196258
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
One bathroom & kitchen remodeling:replace kitchen cabinets, appliances lighting, update electrical & plumbing as needed in kitchen.update fixtures in bathroom new lighting, update electrical tile in both rooms new flooring, new electrical panel to accomodate new circuits.no change in layout of walls & openings
Valuation:
$42,000
Permit #:
202104208882
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remodel kitchen replace cabinetry and counters remodel bathroom replace tile tub shower toilet and fixtures
Valuation:
$72,000
Permit #:
B2023-00917
Status:
plancheck
Fee:
$1,380
Permit Type:
N/A
Building Type:
N/A
Construction of a detached 560 square foot 1-bedroom adu
Valuation:
$275,000
Permit #:
BISUB21-00705
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel kitchen. change cabinets counters sink and faucet. no structural changes no exterior changes to the building
Valuation:
$46,000
Permit #:
B2023-04156
Status:
issued
Fee:
$2,630
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel and master bathroom remodel. both in kind remodels. new can lighting in kitchen master bathroom master closet and bedroom **all work to be done at the same time.** **1/28/2020 revison to scope. install new water heater in same location. replace sink and toile in powder room and replace sink toilet and shower vaulve in hall bathroom
Valuation:
N/A
Permit #:
BIAL19-012890
Status:
final
Fee:
$2,575
Permit Type:
N/A
Building Type:
N/A
Remodel of master bathroom. replace fixtures tub shower enclosure toilet and sink. new tile new lighting in ceiling. replace 2 windows and addition 1 window and 2 skylights. fire zone 2
Valuation:
$42,000
Permit #:
B2020-02812
Status:
final
Fee:
$2,501
Permit Type:
N/A
Building Type:
N/A
Install new window at garage in place of existing door. stucco repair at front porch area where window is being installed. addition electrical outlet at front porch. repalce roof sheathing and 1 x8 v groove. replace 2x4 rafters at front porch area due to dryrot
Valuation:
N/A
Permit #:
BIAL19-012366
Status:
final
Fee:
$440
Permit Type:
N/A
Building Type:
N/A
Interior bathroom & master bedroom remodel
Valuation:
$35,000
Permit #:
B2023-00390
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building/residential/mir/miscellaneous residential
2020-10-04
Replace existing deck with similar materials replace all framing and connectors use existing piers install new girder beam 4x8 pt on top of pier posts to support new joists
Valuation:
N/A
Permit #:
BIMIR20-009441
Status:
withdrawn
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit 11c: provide and install new door frame at new opening. relocate existing door. install new drywall at existing opening
Valuation:
$10,000
Permit #:
202403087400
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Demolish 6 (196sf) cabins & 1 (500sf) garage w electrical
Valuation:
$700
Permit #:
BD23-0625
Status:
issued
Fee:
$842
Permit Type:
Demolition
Building Type:
N/A
Replace 24 windows aluminum to aluminum wood clad dbl glass with same grid patterns. visible from street in kind
Valuation:
$16,000
Permit #:
202104208910
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Need final inspection on installed plumbing fixtures in remodeled bathroom. reference building permit 202003166664
Valuation:
N/A
Permit #:
PP20210319895
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Renew permit #01712085936 so that final inspection can be done. all work was ompleted an rough inspection wasa done job card lost during construction
Valuation:
$1
Permit #:
202103166664
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Unit 1703: bathroom remodel; remove/replace toilet sink shower tile in 2/f bathroom
Valuation:
$30,000
Permit #:
201712085936
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Replace gfci install 3 new can lights new sconces; 5 lights 2 switches 1 receptacle 1 fan
Valuation:
N/A
Permit #:
E201712089598
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Hall bathroom remodel. replace windows like for like. remove bathtub and install shower in place. new vanity toilet and electric medicine cabinet
Valuation:
N/A
Permit #:
BIAL19-007150
Status:
final
Fee:
$733
Permit Type:
N/A
Building Type:
N/A
Remodel basement bathroom to include new sink faucet shower enclosure and electrical and fan. replace one fuse box with new sub panel in workshop 5/9/2018 revision
Valuation:
N/A
Permit #:
BIAL18-003818
Status:
final
Fee:
$1,649
Permit Type:
N/A
Building Type:
N/A
Ja Design & Construction Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Ja Design & Construction Inc License info
Verified License
| License # | 789131 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Ja Design & Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
112
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | National Liability & Fire Insurance Company |
89
Permits
- Building permit records show that Ja Design & Construction Inc has worked on 89 permitted projects.
Ja Design & Construction Inc Employees
MW
Mark Christopher Weyland
Rmo / Ceo / Pres
RW
Reiko Weyland
Officer